Finally, you can also look at the entries that have been deleted from the File over the years.

Requests that we email the File will be ignored. Also note that the
info version has been phased out; it's an HTML world now.

Why There Are No diff Files

Many people have asked why I don't release diff files for new versions, so
people can avoid having to fetch the whole thing each time. It's because
diffs tend to lose the actual semantic changes in a lot of noise resulting
from very low-level tweaks (typo fixes, re-justifications, etc.). This bulks
the diffs up to the point where I don't think they're enough smaller than the
File itself to justify the hassle costs of issuing or using them.